It's not only the case with Vectors it come up again for example when I use VecView,even though I flush and destroy the viewer :
==3347== ==3347== 18,276 bytes in 1 blocks are possibly lost in loss record 3,420 of 3,439 ==3347== at 0x4A04360: memalign (vg_replace_malloc.c:532) ==3347== by 0x8AC2AA: PetscMallocAlign(unsigned long, int, char const*, char const*, char const*, void**) (mal.c:30) ==3347== by 0x8ADBAE: PetscTrMallocDefault(unsigned long, int, char const*, char const*, char const*, void**) (mtr.c:192) ==3347== by 0x9E4350: VecCreate_MPI_Private(_p_Vec*, PetscTruth, int, double const*) (pbvec.c:187) ==3347== by 0x9E4A0A: VecCreate_MPI (pbvec.c:232) ==3347== by 0x9A9F32: VecSetType(_p_Vec*, char const*) (vecreg.c:54) ==3347== by 0x9FEBA0: VecCreateMPI(ompi_communicator_t*, int, int, _p_Vec**) (vmpicr.c:42) ==3347== by 0xBC06F2: DACreateNaturalVector(_p_DA*, _p_Vec**) (dadist.c:99) ==3347== by 0xBC24B8: DAView_VTK(_p_DA*, _p_PetscViewer*) (daview.c:145) ==3347== by 0xBC3336: DAView(_p_DA*, _p_PetscViewer*) (daview.c:244) ==3347== by 0x6D612C: WriteOutput(AppCtx*, int) (PFMAT-Init.cpp:312) ==3347== by 0x6CFE59: main (PFMAT-main.cpp:206) ==3347== Ata On Jan 12, 2011, at 1:36 PM, Satish Balay wrote: > perhaps you are missing a call to VecDestroy() on the vec created by > DACreateGlobalVector? > > Satish > > On Wed, 12 Jan 2011, Ataollah Mesgarnejad wrote: > >> Dear All, >> >> I have a memory leak problem with my program; it eventually exhausts all the >> memory on my system and program aborts. I was checking memory usage with >> Valgrind and there is a persistent error that always traces back >> PetscMallocAlign. Something like: >> >> ==2918== >> ==2918== 18,792 bytes in 2 blocks are possibly lost in loss record 2,256 of >> 2,257 >> ==2918== at 0x4A04360: memalign (vg_replace_malloc.c:532) >> ==2918== by 0x8AC18A: PetscMallocAlign(unsigned long, int, char const*, >> char const*, char const*, void**) (mal.c:30) >> ==2918== by 0x8ADA8E: PetscTrMallocDefault(unsigned long, int, char >> const*, char const*, char const*, void**) (mtr.c:192) >> ==2918== by 0x9E4230: VecCreate_MPI_Private(_p_Vec*, PetscTruth, int, >> double const*) (pbvec.c:187) >> ==2918== by 0x9E48EA: VecCreate_MPI (pbvec.c:232) >> ==2918== by 0x9A9E12: VecSetType(_p_Vec*, char const*) (vecreg.c:54) >> ==2918== by 0x9FEA80: VecCreateMPI(ompi_communicator_t*, int, int, >> _p_Vec**) (vmpicr.c:42) >> ==2918== by 0xBBFA6C: DACreateGlobalVector(_p_DA*, _p_Vec**) (dadist.c:42) >> ==2918== by 0x6CE34F: main (PFMAT-main.cpp:76) >> ==2918== >> >> >> I'm wondering if this is related to a some error in my declarations or a >> known issue or an issue at all? >> >> PS: I get the same kind of error both on my Mac os X 10.6 and Fedora 13. >> >> Best, >> Ata Mesgarnejad >
